Pool Chlorine Tablets

Chlorine Tablets & Pool Water Maintenance. Your Chlorine Tablet (Pool Stabilizer/Conditioner) Info. For The Pool Perfect For You.

These tabs (also called smart sticks) are a safe and effective way to keep your swimming pool clean, clear, and healthy. 

It can also aid in keeping your pH level in line with no pH bounce.

For more convenience, put them in your tablet floater or a chlorine tab automatic chlorinator.

This will also help keep your pool maintenance cost in check.

Trichlor Chlorine Tablets

Trichlor Trichlor, or trichloroisocyanuric acid, are sold as:

  • 3" (inch) chlorine tablets
  • 1" (inch) chlorine tablets
  • Pucks that you can either put into a swimming pool floater or a chemical feeder

Use A Tab Feeder Or A Tab Float

When the water passes over the tablets they dissolve to increase the swimming pool chlorine and cyanuric acid level in the pool.

They will also lower the swimming pool pH because they tend to be on the acidic side.

Trichlor pucks are very convenient, but there is a catch. When the CYA (pool stabilizer/conditioner) get too high, above 90 - 100ppm, you will need to drain 1/3 - 1/2 of your water, refill, then start again.

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Many times pool owners will be going along just fine until something happens like an algae bloom. They test and re-test the pool water and everything seems fine, but the water keeps getting greener and they have no idea why. Probably the CYA is either too high (above 90ppm) or too low (below 20ppm).

Pool Chlorine Tablets

You need to remember that Trichlor tabs are very acidic so you need to keep the pump running at least 12 hours in the Summer and 4 - 6 hours in the Winter, unless you choose to winterize your swimming pool. If the pump doesn't run long enough you'll get a build-up of pool acid and chlorine which can ruin your swimming pool cover and plumbing.

There are some chlorine tablets on the market that say it's safe to put them in the skimmer because they only dissolve when the water is circulating. My advice is to just get a good tab floater or swimming pool chemical feeder and use it. Never put tabs in the skimmer.

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Also remember that for every 1ppm of Free Available Chlorine you will also add 0.6ppm of CYA. Without proper dilution and backwashing of the swimming pool water the CYA will build up very quickly.

A higher CYA means a higher level of pool chlorine needs to be used to properly sanitize your pool. 

Every 10ppm of pool chlorine that is added by using Trichlor tabs you will also increase your cyanuric acid level by 6ppm.


Something else that is good for swimming pool chemical maintenance is Dichlor, or sodium dichloroisocyanurate. It is a granular, stabilized, and fast dissolving form of pool chlorine and is often used as a swimming pool shock.

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While Dichlor does add pool chlorine it will also increase your CYA level while lowering your pool water pH level. Take care in using Dichlor as your CYA can get out of hand very quickly. I never recommend using Dichlor for either weekly chlorination or routine pool shocking. The only time your really need it is when you have a newly filled pool or need to quickly get some CYA in the pool.

I would recommend liquid pool chlorine (sodium hypochlorite) as your pool shock. This kind of pool chlorine is good when you shock it and nothing will happen to the CYA level. Calcium Hypochlorite will raise your calcium hardness and increase the pH level.


  • Use your pool pucks on a regular basis

These can be used in your salt water pool systems as well. Keep an eye on the CYA level. The range is 30 - 50 ppm for regular pools and 60 - 80 ppm for salt pools..

  • Regular use of pucks can reduce pool maintenance cost, weekly pool maintenance, and are great for pool water care
  • Test the water with good pool test strips or a swimming pool test kit

I prefer an FAS-DPD K -2006 Taylor test kit. 

  • Chlorine safety is a must so handle all chemicals with care
  • Unbalanced water can cause cloudy pool water, an algae swimming pool, and green pool water
  • Should be removed at swimming pool closing
  • Excellent for in ground swimming pools and above ground pool maintenance
  • Great way to control green swimming pool water

May cause swimming pool stains if left on the bottom of the pool.

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What Other Visitors Have Said

Click below to see contributions from other visitors to this page...

Run Chlorine Tabs Only 
My pool guy will be putting in a new vinyl liner soon. He suggested using chlorine tablets only, shock only if needed, and use baking soda for alkalinity. …

Stabilizer Problems 
I bought a house with a 20,000 gallon fiberglass pool. I used tabs for the first few years until the stabilizer levels got too high (200 ppm). I drained …

Pool Route Care Not rated yet
I have been using tricolor tabs for my pool route and now have several pools needing to be drained to lower the CYA level. I understand I can switch …

3" Chlorine Tablets Not rated yet
I have asked questions in the past and have purchased your brochures. We had high CYA. We also had stains, which I had sent a pic, rec ascorbic acid. …

Tabs to Liquid Chlorine Not rated yet
I have a service route here in south Texas...i want to only use liquid chlorine...is it more expensive or about the same when using chlorine tabs? love …

Swimming Pool Chlorine Tabs/Pucks Maintenance Not rated yet
How many 3 inch pucks of trichlor should I put in a floater in a 20,000 gallon concrete pool in order to maintain a proper chlorine level? Thanks …

Tri-Chlor Pool Tablets & Pool Shock Not rated yet
I am using Tri-chlor tabs in my pool, but the chlorine levels are low constantly. The pool shop testing the water has had me shock the water twice in …

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